MonkeyMD
Autocross Champion
Swapped plugs today and installed @StorableComa grounding kit. @Diggs24 do you know what is the white residue on plug 1? Car is running EQT stage 1 and I add 1 gal ethanol with atleast 10 gal of Shell 93. Every month or so I run a full tank of 93 so the r content don't go too high.
Forgot to add that the car didn't run rough or anything, this set of Ruth has around 35k miles on them.
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Either part out or send it. There's no middle ground